VS Electronics and Embedded Development

I’ve finished writing and finalizing my first disassembler, for the AVR architecture. I discovered that avrdisasm, avrdasm, disavr, and even dasmavr names were all taken, so I went eventually went with vavrdisasm.

vAVRdisasm is a finished and working AVR disassembler. It should work on most *nix systems, as well as a Cygwin environment.

Here is an excerpt from the README that gives a brief summary of its functionality:
vAVRdisasm is an AVR program disassembler. It supports all 136 AVR instructions as defined by the Atmel AVR Instruction Set, revision 0856E-AVR-11/05.

This single-pass disassembler can handle Atmel Generic, Intel HEX, and Motorola S-Record formatted files containing valid AVR program binaries.

vAVRdisasm features a handful of formatting options, including:

• Printing the instruction addresses alongside disassembly, enabled by default
• Printing of the destination comments of relative branch/jump/call instructions, enabled by default
• Ghetto Address Labels (see “Ghetto Address Labels” section)
• .DW data word directive for data not recognized as an instruction during disassembly.

The heart of vAVRdisasm is its “Ghetto Address Labels” feature. With this feature, vAVRdisasm can produce directly assemble-able disassembly that can be easily modified without having to manually format the disassembly (i.e. adjusting relative branch/jump/call distances). This means you can disassemble a program, add, remove, and modify any instructions, and directly re-assemble it.

See the vAVRdisasm page for a complete description of vAVRdisasm, its usage, and the links to download the disassembler.